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Movable booster type pump outlet control two-stage variable oil pump

An oil pump and variable technology, applied in pump control, engine components, machines/engines, etc., can solve problems such as engine block design limitations, complex overall structure, etc., to achieve the effect of changing displacement

Active Publication Date: 2021-02-05
HUNAN OIL PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional two-stage variable oil pumps usually need to reserve feedback oil holes on the engine block in practical applications, so that the feedback oil in the main oil passage can enter the oil pump to drive the oil pump to change the displacement, which causes the engine The design of the cylinder block will be subject to certain restrictions, and the oil passage connection between the oil pump and the engine block also complicates the overall structure. Under the current trend of more and more streamlined and effective engine systems, this conventional There are obvious deficiencies in the two-stage variable oil pump

Method used

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  • Movable booster type pump outlet control two-stage variable oil pump
  • Movable booster type pump outlet control two-stage variable oil pump
  • Movable booster type pump outlet control two-stage variable oil pump

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Embodiment Construction

[0024] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0025] It should be noted in advance that in the present invention, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it can be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediary, and it can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0026] In addition, in the present invention, unless otherwise clearly specif...

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Abstract

The invention discloses a movable booster type pump outlet control two-stage variable oil pump, and relates to the technical field of oil pumps. The movable booster type pump outlet control two-stagevariable oil pump comprises a pump body, a pump cover, a pump shaft, a rotor, a sliding block and a spring; a feedback cavity is arranged in the pump body; a control valve is arranged on the pump cover; a plunger is arranged in a valve hole of the control valve; a control valve spring is abutted between the plunger and the rear end of the valve hole; a convex ring is arranged on the circumferential surface of the middle of the plunger; a plug is arranged at the front end of the plunger; an oil inlet and an oil outlet are formed in the side wall of the control valve; the oil inlet communicateswith a pump outlet and located in the front side of the convex ring; a control valve normally-open cavity communicating with the pump outlet is formed between the convex ring and the plug; the oil outlet communicates with the feedback cavity, and is located in the rear side of the convex ring; the pump cover is provided with an oil channel communicating with the pump outlet and an inlet in the front end of the control valve hole; and an electromagnetic valve is arranged in the oil channel. Two-stage variables are achieved through the internal oil duct of the oil pump and the electromagnetic valve, and a feedback oil hole does not need to be designed in an engine cylinder body, so that the structure of the engine cylinder body is greatly simplified.

Description

technical field [0001] The invention relates to the technical field of oil pumps, in particular to a two-stage variable variable oil pump with outlet control of a mobile booster pump. Background technique [0002] Conventional two-stage variable oil pumps usually need to reserve feedback oil holes on the engine block in practical applications, so that the feedback oil from the main oil gallery can enter the oil pump to drive the oil pump to change the displacement, which leads to engine The design of the cylinder block will be subject to certain restrictions, and the oil passage connection between the oil pump and the engine block also complicates the overall structure. Under the current trend of more and more streamlined and effective engine systems, this conventional There are obvious deficiencies in the two-stage variable oil pump. Contents of the invention [0003] The purpose of the present invention is to provide a mobile supercharged pump outlet control two-stage v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/02F01M1/16F04C14/16
CPCF01M1/02F01M1/16F01M2001/0238F04C14/16
Inventor 杨正中许仲秋刘光明佘笑梅
Owner HUNAN OIL PUMP
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